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LoongArch: Set CPU#0 as the io master for FDT

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ACPI systems set io masters by parsing ACPI MADT, FDT systems have no
MADT so we explicitly set CPU#0 as the io master. Otherwise CPU#0 will
be considered as hotpluggable.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Huacai Chen 2023-06-29 20:58:42 +08:00
parent 84d21f13af
commit 872b368b22
1 changed files with 1 additions and 0 deletions
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1
arch/loongarch/kernel/smp.c
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@ -210,6 +210,7 @@ static void __init fdt_smp_setup(void)
}
loongson_sysconf.nr_cpus = num_processors;
set_bit(0, &(loongson_sysconf.cores_io_master));
#endif
}